diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index ae2e5835e..efad7f913 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -27,14 +27,14 @@ jobs:
           echo "OUTDIR=$OUTDIR" >> $GITHUB_ENV
 
       - name: Deploy stable
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         if: startswith(github.ref, 'refs/tags/')
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./book/book
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./book/book